Abthub stockdale cosleb



A. S. CO'SLER. SYSTEM FOR SEPARATJNG FLUID SUBSTANCES. APPLICATION FILEDOCT. 5,. l9l8.

1,327,944. I i V Patented Jan. 13, 1920.

ARTHUR STOCKDALE COSLER, OF NEW YORK, N. Y.

' SYSTEM FOR S'EPARATING FLUID SUBSTANCES.

. Specification of Letters Patent.

Patented Jan. 13, 1920.

Application filed October 5, 1918. Serial No. 257,023;

To all whom it may concern:

Be it known that I, ARTHUR STOOKDALE COSLER, a citizen of the UnitedStates of America, and resident of 617 Fifth Avenue Building, in thecity of New York, in the State of New York, in the United States ofAmerica, have invented certain new and useful Improvements in Systemsfor Separating Fluid Substances, of which the-following is thespecification.

The invention relates to improvements in means for separating substancesof difierent specific gravity while in their liquid state as describedin the present invention and illustrated in the accompanying drawingsthat form part of the same.

The invention consists essentially of the novel means employed, wherebythe substance in suspension in the heavier liquid is allowed torisethrough thin layers of liquid and drawnoff from its highest elevationand thus removed from the main body by means of overflows maintained atsuitabledifien ent levels.

The objects of the invention are to relieve acids and other substancesutilized in industrial pursuits from hydrocarbon oils, oleoresinousparticles and volatile substances, to

accomplish this puropse economically during the process of manufacturingor reclaiming the acid liquors, to increase the efliciency in operationof the sulfite acid liquors in the'pulp industry and generally toprovide a well developed system of'separating substances of lighter weiht from those of heavier weight holding said lighter ones in suspension.

In the drawings, Figure 1 is a vertical sectional View of the separatingchamber of the shelves effecting the separation. I i i Fig. 2 is avertical sectional view showing a cross sectional View of the shelveseffecting the separation and elevation and the discharge receptacle.

Fig. 3 is a diagrammatic view showing the application of the inventioninthe production of sulfite acid liquor.

Fig. 4 is a plan View of the separating chamber, discharge receptacleand piping.

Like numerals of reference indicate corresponding parts in each figure.

'In describing this invention, its applicationto'the productionof acidliquors for use in the sulfite pulp industrywill be particularly pointedout in order to more clearly lead to a correct understanding of itsparts and operation, though many other applicatlons of the s stem canreadily be made without materially modifying the salient features hereinset forth.

- The system in the first place may be said to be dependent upon achamber, receptacle,

tank, vat or other inclosure here shown as a wooden tank 1intermediately arranged between the acid reclaiming tank 2 and acidstorage tank 3 and communicating through the discharge receptacle orselector 4 with the reservoir 5, the latter containing the lightersubstance separated, herein designated by the chemical name of itsprinciple constituent part cymene being what is familiarly but improerly known as the turpentine of the sul te acid liquor.

The separation of this substance is desirable because it has anintrinsic'value in arts and industries and also because the better 'theseparation of this substance from the acid liquor, the better the latteris for its uses in chemical action on pitch-containing wood from whichpulp is produced.

the other sides of the said tankbeing denoted by the inlet pipe 9 on theone hand and the outlet pipe 10 on the other hand.

The inlet pipe 9 leads from the acid reclaiming tank2 to and through thebottom of the tank 1, said pipe 9 extending upwardly throughgorresponding holes in the shelves 6 and just below each shelf havingthe discharge openings 11 and preferably closed at its upper extremityabove the shelves 6 by the cap 12, though it maybe passed through thetop of the tank to provide for clearing out.

This pipe 9 intersects the shelves 6 midway of the upward incline ofsaid shelves at one side of the tank 1 and the infiowing acid liquoroccupies space between the shelves'and the substance or substances of.lighter specific gravity rise to the under surface of a shelf and flowunder each shelf toward the upper-edges of said shelves, where thecomparatively long and wide openings zl8zpermit said lighter substancesto join the naturally fall toward'the lower sides of said shelves to thearc-shaped openings 14: made at the lower extremities of the saidshelves.

The pipe 9 is near to the wall of the tank, but not against said wall,as the discharge openings 11 face the tank wall and not the center ofthe tank.

The outlet pipe is closed at its lower end by the block 16 and at'itsupper end extends through the side wall-of the tank 1, as shown or itmay be passed through either end of the tank, for providing for clearingout scale, and enters the discharge receptacle or selector-4;.

The pipe 10 is formed with the inlet openings 17 in vertical alinementand facing the wall of the tank "1, cachopening 17 being. flush with'theupper surface of a shelf 6, therefore the acid liquor crossing over fromthe pipe 9 finds egress through the openings 17 from whichit'flowsintothe discharge receptacle &.

Meanwhile, the lighter substance, which is a liquid in a finely dividedstate, having crept along the various st-agesto its vertical passagerises and forms a solid layer at the top and is drawn 01f into thedischarge receptacles by means of the overflow pipe 18. The man hole 19is shown through the top of the tank and the drain 20 through the bottomto remove the solids or residue dropping froni the shelves through thelower openings in the shelves.

The discharge receptacle 4 iS'PZIltltlOIlBd .to form the inletcompartment 21 into which the pipe 10 empties, said compartment havingat one side the overflow wall: 22, and over which the acid flows intothe outlet compartment 23. The pipe l8 leads to and empties into thecompartment 24; of the receptacle 4, said compartment 2 1 having at oneside the overflow wall 25 and over which the lighter substance flowsinto the outlet chamber and on into the reservoir, the acid liquor fromthe outlet compartment 23 flowing into the acid liquor storage tank.

Briefly theoperation of the system is as follows :'-v

The acid liquor from the acid reclaiming tank flows through the pipe 9and up said pipe in the separating tankfor chamber and at each outletopening under a shelf discharges between the under surface of the uppershelf and the tOpSHlfEtCBQOf the next shelf below.

Theresult of this is a distribution of the lighter and heavier elementsmaking up the acid liquor as received 111 the tank 1;, the

lighter floating up to the upper openings throughithe shelves andthe'acid liquor relieved "of the lighter substance spreading over "andentering the inlet openings to the pipe 10 and as this pipe leads to thecomings. 1

out in a layer above the acid liquor. A column of lighter substance willalways be taller than acolumn of the heavier liquid from which it isseparated exerting the same pressure at plane of division, because 01":the difference in the specific gravity of the two liquids. For instanceif you take a layer of cymene st feet deep, said layer at the point ofdivision will exert the same pressure as a column of acid liquor fortyor forty-one inches deep,

This difference in levels permits the removal of the acid liquorcontinuously over the wall 22 and the cymene over the wall 25, whichmust be considerably higher than the wall 22, in order to account forthe difi'erence in height of the columns of cymene and acid liquor oiequal hydrostatic pressures and provide for the fluctuation in totaldepths of liquor in the tank caused by various rates of flow throughsame.

, Various changes may be made in the construction of the several partsto the system, without departing from the spirit of the invention, solong 'asthey are withinthe scope of- ,the claims following.

.What I claim is r 1. In a system for separating fluid substances,inclined shelves suitably inclosed and supported and adapted to spreadthe fluid and cause, the elevation of the lighter element at-the upperends of the inclinations, a tubular inlet member having dischargeopenings between said shelves respectively and a tubular outlet memberhaving ing in vertical. alinemenhimd means for feeding the'fiuid betweenthe several shelves and means between the :shelves'for discharging theheavier elements, coincidently with the flow of'the-li-ghter elementstosaid open- 3. In a system. for separating fluid substances, a tankhaving a plu'ralityof inclined shelves, each shelf occupying thecomplete cross'area of the tank andhaving iatthe upperend acomparatively wide opening and :at the "lower end a residue openinganinl sed teed passage extending upwardly through the shelves'j and havingdischarge openings at ea helf, an inclosedfldischarge assage extendingupwardly through the shelves and Zhavinginlet'epenmgs at each shelfaiidadischarge passage for the lighter elements.

5. In a system for separating fluid substances, a tank having aplurality of incline parallel shelves, each occupying the cross area ofthe interior and having an opening at the upper end for the lightersubstance and a slot at the lower end for the residue, an inlet pipepassing through the bottom and upwardly through said shelves, said pipehavlng openings below each shelf, discharge pipe diametrically oppositeto said inlet pipe and having inlet openings flush with the uppersurfaces of said shelves, said discharge openings in the inlet pipe andinlet openings in the discharge pipe facing the wall of the tank at apoint adjacent thereto, and a discharge pipe for the lighter elements.

6. In a system for separating fluid substances, a production tan aseparating tank connected with said production tank havin shelves forthe spreading of the fluid substance, a discharge receptacle inproximity with the upper end of said separating tank and partitionedinto inlet and outlet chambers for the heavier elements and inlet andoutlet chambers for the lighter elements, a pipe connecting thedischarge of said separating tank with said discharge receptacle for thepassage of the heavier elements, a pipe connecting the separating tankand dis charge receptacle for the passage of the lighter elements, astorage tank and a reservoir for the lighter elements.

7. In a system of the class described, a main tank, a storage tank, anintermediate tank having distributing means therewithin adapted tocreate an upward flow of the lighter elements, a pipe from the main tankforming with a plpe vertically arranged within the intermediate tank andthe con nections therebetween a siphon for the transfer of liquid fromone tank to the other, a discharge receptacle in proximity with theupper end of said separating tank and having inlet and outlet chamberspartitioned by walls adapted to allow an overflow, an outlet pipe fromsaid intermediate tank to said discharge receptacle, an inlet pipe tosaid discharge receptacle for the flow of the lighter elements from saidintermediate tank, a pipe from said discharge receptacle to said storagetank, a reservoir, and a pipe connecting said discharge receptacle withsaid reservoir for the passage of the lighter elements.

Signed at the city of New York, this 24th day of July, 1918.

ARTHUR STOGKDALE COSLER.

